EP1001064A2 - Apparatus for making perforated nonwoven fabrics by means of hydrodynamic needling - Google Patents

Apparatus for making perforated nonwoven fabrics by means of hydrodynamic needling Download PDF

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Publication number
EP1001064A2
EP1001064A2 EP99122456A EP99122456A EP1001064A2 EP 1001064 A2 EP1001064 A2 EP 1001064A2 EP 99122456 A EP99122456 A EP 99122456A EP 99122456 A EP99122456 A EP 99122456A EP 1001064 A2 EP1001064 A2 EP 1001064A2
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EP
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Prior art keywords
drum
fleece
projections
plastic
nonwoven
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Granted
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EP99122456A
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German (de)
French (fr)
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EP1001064B1 (en
EP1001064A3 (en
Inventor
Gerold Fleissner
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Truetzschler Nonwovens GmbH
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Fleissner GmbH
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Publication of EP1001064A3 publication Critical patent/EP1001064A3/en
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H18/00—Needling machines
    • D04H18/04—Needling machines with water jets

Definitions

  • the method of manufacture according to US Pat. No. 3,750,237 is better, after which the prefabricated, held between two endless webs with hard Water jets for producing the hole structure is applied.
  • the desired Hole structure is applied to the endless web, such as a drum. It consists of one uniformly perforated drum, which is covered all around by an endless sieve.
  • the Endless sieve has open and closed areas, depending on the desired perforated structure.
  • a disadvantage of this type of production of the holes is the fact that this way no holes can be made with sharply defined edges and additionally individual fleece fibers in the production of the holes through the hard Water jets are moved in the direction of the endless screen and then there jam between the wires of the sieve.
  • the hole structure prescribed there, or the prescribed arrangement of the Plastic elevations in the form of a diamond or the like prevent this stiffness.
  • the dreaded interference stripes on the treated fleece occur because of the arrangement of the holes in the sheet of the drum with the forcibly fixed arrangement of the nozzle holes in the nozzle bar to the strips can interfere.
  • the invention has for its object to find a device with all the conditions of the type mentioned can be met.
  • the holes in the fleece should not should only be sharply delineated, but the perforated fleece should in particular in all Directions, not only in width and perpendicular to it, have uniform strength -
  • the manufacture of the perforated structure was also delivered - and also no interfering strips exhibit.
  • the invention consists in that the elevations are distributed unevenly in both dimensions over the endless surface, they should be randomly spaced from each other (Application of a random generator) covering the whole of the fleece Area to be distributed. All problems are eliminated at once. Since the Holes can be distributed unevenly over the surface of the fleece highest strength of the perforated fleece have no preferred direction.
  • the smooth endless surface will have the shape of a drum, it is but an endless belt for making the holes is also conceivable. Because of the many Drainage openings distributed close to each other over the surface of the wall, because of the z. B. with laser beams manufacturing type of plastic Elevations and also the holes in the wall should be the smooth surface in the Cross-section of the wall only have a small dimension. It is therefore advantageous if - for the necessary suction of the sprayed liquid - on both sides of the striking the fleece and thus on the surface supporting the fleece Jets of water on the opposite side of the belt or within the Wall of the longitudinal slide rails for supporting the belt or the Drum wall are arranged. Is between the supporting longitudinal rails then the suction of the pump takes effect.
  • the plastic elevations such as mandrels, should depend on practical requirements cover an area of 20 to 50%, generally 30%. This is the open one
  • the area of the fleece is correspondingly large.
  • the drainage openings, in general made of drilled or burned holes should have a diameter of 0.5 up to 3 mm generally 1.5 mm. This is a quick removal the sprayed liquid possible without the fibers of the fleece in can penetrate the holes and get caught there.
  • O A is the open area in the fleece due to the number of holes or the hole dimension and structure in the fleece, D ⁇ stands for the diameter of the plastic elevations (mandrels) effective for the hole structure and D distance for the average distance of the holes in the Fleece or the thorns on the endless belt or the drum.
  • the drainage openings are then introduced into the wall around the mandrels, whereby the drainage openings are also distributed unevenly over the surface of the wall, but not at random like the mandrels, but depending on the placement of the mandrels.
  • this will be perforated fleece at an angle depending on the arrangement of a trigger device and in the case of using a drum as a carrier element of the mandrels the finished fleece is pulled off tangentially from the rounding of the drum, while the mandrels continue to move in the same circumferential direction.
  • the invention provides an embodiment of the Device before that the flanks of the plastic ridges like spikes, at least in Direction of transport of the fleece seen the outer flank of the respective plastic elevation, has the shape of an involute. The perforated fleece thus comes loose from the thorns as with meshing gears without any problems.
  • a water needling device such as that described in DE-A-197 06 610 is shown.
  • the device is used to insert a still unconsolidated Fleece by means of a supporting endless belt in the gap one above continuous belt and then around a drum on which the fleece then for the first time with water jets emerging from the nozzle bar assigned to the drum is needled.
  • Such a device is to be modified to produce sharp delimited holes in an already consolidated or partially consolidated fleece.
  • the fleece 2 which is basically finished and therefore not carried by an endless belt immediately overflows the drum 1, which outside one or more nozzle bars 3rd 2 are assigned directly.
  • the nozzle bar 3 is axially parallel to Drum 1 arranged and on its underside associated with drum 1 a nozzle strip, not shown, for the exit of the water jets 4.
  • drum wall 5 which is thin and at Plastic is unstable in the manufacture of metal, such as brass, can the drum wall 5 but also be stable and self-supporting.
  • This drum wall 5 knows a multitude of plastic elevations according to FIG. 4, like mandrels 6 on, according to FIG. 3 in a completely uneven distribution the peripheral surface of the drum are arranged.
  • the mandrels 6 are surrounded by drainage openings 7.
  • the arrangement of the mandrels 6 is by means of a random generator determined so that the result brings a never recurring arrangement. The distance the mandrels 6 to each other is always changed unevenly, as it is in 4 is disclosed.
  • the plurality of mandrels 6 can be arranged in this way using computer controlled laser beams from the full material of the wall be burned out. Then or at the same time, the drainage openings are how to drill holes 7 that surround the mandrels 6 all around.
  • the respective The distance between the holes 7 and the boundaries of the mandrels 6 is uneven, 4, but the arrangement of the holes 7 in the wall 5 depending on the arrangement of the mandrels 6 and in this respect only secondary or not at all determined by a random number generator.
  • the image of the holes 7 around the mandrels 6 can being the same more often can reveal a periodically recurring picture, the only important thing is the uneven arrangement of the mandrels 6.
  • the open area is desired to 30% and the holes in the fleece with a distance of 3 - 5 mm, at least the number of mandrels 6 per surface determined and thus the random generator can be populated.
  • the drainage openings to the Removal of the sprayed-on liquid must then be introduced, with their Diameter should be between 0, 5 and 1.5 mm so that the fibers of the fleece can not get caught in the holes 7.
  • the formation of the mandrels 6 as well as from Fig. 4 emerges, they extend around the drum 1.
  • the orientation of the outer surface is outward converging conically.
  • the cross-sectional shape is not as shown conical, i.e. tapering evenly, but the contour in the cross-sectional line has the shape of an involute, which is dependent on the diameter of the drum 1.
  • the mandrels 6 are bent all around like an involute, important but only the surface of the front arranged in the transport direction is to be designed in this way Mandrels 6, because here arise when the perforated fleece 2 'is detached from the drum 1 Signs of stretching particularly negative for the desired sharp Delimitation of the holes can be.
  • the drum wall 5 is on a roller 8 of a more pronounced design Longitudinal sliding rails 9 supported all around.
  • the roller 8 is also the suction tube, within which a suction draft is generated to spray the liquid 4 out vacuum the fleece 2 again.
  • the suction slot 10 is radial bounded on both sides by such longitudinal sliding rails 9, which also extend in the circumferential direction can be slidably mounted on the roller 8.
  • the sliding longitudinal rails not only serve to support the drum wall 5, but also for sealing to the suction slot 10.
  • Nozzle bars are to be arranged accordingly several suction slots.
  • the Drum wall 5 can be made of plastic, but better for reasons of stability be made of a metal.
  • the sliding longitudinal rails 9 can also be made of both Materials are made, but the pairing should be different in the material be so that metal always slides on plastic.

Abstract

The assembly to produce a perforated nonwoven fabric, using a hydrodynamic needling action, has a circular drum (1) to support the fabric. The roller surface has drain openings (7) to lead off the high pressure fluids from the needling water jet beam over the fabric, and malleable projections (6) to form the perforations from the under surface of the nonwoven, which are distributed irregularly in both dimensions over the roller surface. The projections (6) are at irregular intervals in a random scattering, to cover the whole of the surface of the nonwoven material. The continuous surface to support the nonwoven can be a continuous belt or a drum (1). Water jets are directed from a lateral jet beam at the unsupported surface of the nonwoven fabric. The walls of the drum (1) or the under side of the belt are supported by sliding rails (9), with a suction slit (10) at the inner roller (8) located between two rails (9) to act on the covering nonwoven through a pumped suction. The sliding rails (9) support the axially parallel suction roller (8). Additional supports can be fitted, in addition to the rails (9), to hold the drum wall at the suction roller (8). The continuous belt or the drum (1) is of plastics or a metal material. The sliding rails (9) are of metal or plastics, according to the material used for the surface projections (6). The drum projections (6) cover 25-50% of the drum surface, and pref. 30%. The drain holes (7) between the projections (6) have a dia. of 0.5-3.0 mm and pref. 1.5 mm. The projections (6) are at intervals of 1.5-20.0 mm and pref. 3-10 mm. The open surface of the nonwoven, through the effective dia. of the projections (6) to give the perforations, is computed according to the formula OA=(DO divided by Dabstand)<2> x 0.9 where OA is the open area surface in the nonwoven, DO is the dia. of the projections to form the perforations, Dabstand is the average gap between the nonwoven perforations or the projections on the supporting surface. The projections (6) have a conical upwards taper into pointed tips. The flanks of the projections (6) have an outer flank, in the movement direction of the nonwoven, in the shape of an unwinding curve, according to the dia. of the drum (1) or the detaching angle of the nonwoven from the support surface. The projection (6) height is 1-3 mm, according to the drum (1) dia. The structure of the projections (6) and drain openings (7) is formed in the fabric support surface by an engraving laser beam from the solid material layer. The projection (6) shape can differ in terms of the cross section surface and/or the effective dia. More than one jet beam delivers water jet streams at the nonwoven fabric, supported on the perforating surface.

Description

Durch die US-A-47 01 237 ist es bekannt, eine Lochstruktur in ein vorgefertigtes Vlies zu bringen, indem das ungelochte Vlies mehrfach längs geschlitzt, dann zur Herstellung der Löcher seitlich gedehnt und in dieser Form durch Wärme fixiert wird. Ein solches Lochvlies hat zwar scharf abgegrenzte Löcher aber nur wenig seitliche Festigkeit.From US-A-47 01 237 it is known to have a hole structure in a prefabricated fleece to bring, by slitting the non-perforated fleece several times lengthways, then to manufacture the holes are laterally stretched and fixed in this form by heat. On Such perforated fleece has sharply defined holes but little lateral strength.

Besser ist in diesem Zusammenhang die Herstellungsart nach der US-A-37 50 237, wonach das vorgefertigte, zwischen zwei Endlosbahnen gehaltene Vlies mit harten Wasserstrahlen zur Herstellung der Lochstruktur beaufschlagt wird. Die gewünschte Lochstruktur ist auf die Endlosbahn, wie Trommel, aufgebracht. Sie besteht aus einer gleichmäßig gelochten Trommel, die rundum von einem Endlossieb bedeckt ist. Das Endlossieb hat offene und geschlossene Bereiche, je nach der gewünschten Lochstruktur. Nachteilig an dieser Herstellungsart der Löcher ist die Tatsache, daß auf diese Weise keine Löcher mit scharf abgegrenzten Kanten hergestellt werden können und zusätzlich einzelne Vliesfasern bei der Herstellung der Löcher durch die harten Wasserstrahlen in Richtung des Endlossiebes verschoben werden und sich dann dort zwischen den Drähten des Siebes verklemmen. Weiterhin ist die Festigkeit des Lochvlieses nur gering, da die Stege zwischen den Löchern ungleichmäßig in der Breite sind. Bei genauerer Untersuchung der Vliesstruktur erkennt man dann noch nachteilige Interferrenzstreifen. Diese rühren von den Löchern in der Trommel mit dem aufgespannten Sieb und der unveränderlichen Anordnung der Düsenstrahlen im Düsenbalken her.In this context, the method of manufacture according to US Pat. No. 3,750,237 is better, after which the prefabricated, held between two endless webs with hard Water jets for producing the hole structure is applied. The desired Hole structure is applied to the endless web, such as a drum. It consists of one uniformly perforated drum, which is covered all around by an endless sieve. The Endless sieve has open and closed areas, depending on the desired perforated structure. A disadvantage of this type of production of the holes is the fact that this way no holes can be made with sharply defined edges and additionally individual fleece fibers in the production of the holes through the hard Water jets are moved in the direction of the endless screen and then there jam between the wires of the sieve. Furthermore, the strength of the Perforated fleece only slight, since the webs between the holes are uneven in the Width are. When examining the fleece structure more closely, you can still see adverse interference fringes. These stir from the holes in the drum with the clamped sieve and the invariable arrangement of the nozzle jets in the nozzle bar forth.

Scharf abgegrenzte Löcher sind nachträglich in ein vorgefertigtes gleichmäßiges Vlies nur mit der Herstellungsart nach den EP-A-0 215 648, 0 223 614 oder 0 273 454 einbringbar. Dort ist jeweils eine Perforiertrommel aus einem glatten Blech mit Drainageöffnungen gebildet, auf dem zwischen den Öffnungen gleichmäßig über die Fläche verteilte plastische Erhöhungen angeordnet sind. Die plastischen Erhöhungen können aus halbseitig offenen Sicken bestehen, so daß damit auch gleichzeitig die Drainageöffnungen gebildet sind, oder aus nach oben spitz zulaufenden, gleichmäßig verteilten Dornen, zwischen denen die Drainageöffnungen im Blech in Form von Löchern angeordnet sind. Wenn auch mit dieser Trommel die gewünschten zum Vlies hin scharf abgegrenzten Löcher hergestellt werden können, so ist doch die Festigkeit eines z. B. kreisförmig ausgestanzten Vliesproduktes nicht in allen Richtungen gleichmäßig. Die dort vorgeschriebene Lochstruktur, bzw. die vorgeschriebene Anordnung der plastischen Erhöhungen in Form einer Raute oder dergleichen verhindert diese Formsteifigkeit. Außerdem können auch hier die gefürchteten Interferrenzstreifen auf dem behandelten Vlies auftreten, weil die Anordnung der Löcher im Blech der Trommel mit der zwangsweise festen Anordnung der Düsenlöcher im Düsenbalken zu den Streifen interferrieren können.Clearly delimited holes are retrofitted into a pre-made, uniform fleece can only be introduced with the production method according to EP-A-0 215 648, 0 223 614 or 0 273 454. There is a perforating drum made of a smooth sheet with drainage openings formed on the between the openings evenly across the area distributed plastic elevations are arranged. The plastic elevations can consist of beads open on one side, so that at the same time the drainage openings are formed, or from tapering to the top, evenly distributed Thorns, between which the drainage openings in the sheet are arranged in the form of holes are. If with this drum the desired ones are clearly delimited towards the fleece Holes can be made, but the strength of a z. B. Circular punched nonwoven product is not uniform in all directions. The hole structure prescribed there, or the prescribed arrangement of the Plastic elevations in the form of a diamond or the like prevent this stiffness. In addition, the dreaded interference stripes on the treated fleece occur because of the arrangement of the holes in the sheet of the drum with the forcibly fixed arrangement of the nozzle holes in the nozzle bar to the strips can interfere.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung zu finden mit der alle Bedingungen der genannten Art erfüllt werden können. Die Löcher im Vlies sollen nicht nur scharf abgegrenzt sein, sondern das gelochte Vlies soll insbesondere in alle Richtungen, nicht nur in der Breite und senkrecht dazu, gleichmäßige Festigkeit haben ― selbstverständlich vorausgesetzt, daß ein solches gleichmäßig verfestigtes Vlies vor der Herstellung der Lochstruktur auch angeliefert wurde ― und auch keine Interferrenzstreifen aufweisen.The invention has for its object to find a device with all the conditions of the type mentioned can be met. The holes in the fleece should not should only be sharply delineated, but the perforated fleece should in particular in all Directions, not only in width and perpendicular to it, have uniform strength - Of course, provided that such a uniformly consolidated fleece the manufacture of the perforated structure was also delivered - and also no interfering strips exhibit.

Ausgehend von einer Vorrichtung nach der EP-A-0 215 684, nämlich bestehend aus einer das Vlies tragenden und transportierenden glatten Endlosfläche, die einerseits mit Drainageöffnungen zum Abtransport der mittels eines Düsenbalkens aus vielen Ausströmöffnungen mit Hochdruck aufgespritzten Flüssigkeit und andererseits mit auf der Ebene der glatten Fläche empor stehenden plastischen Erhöhungen zur Herstellung der Perforation im Vlies versehen ist, besteht die Erfindung darin, daß die Erhöhungen in beiden Dimensionen ungleichmäßig über die Endlosfläche verteilt sind, sie sollen jeweils mit ungleichmäßigem Abstand voneinander nach dem Zufallsprinzip (Anwendung eines Zufallsgenerators) deckend über die ganze das Vlies tragende Fläche verteilt sein. Mit einem Schlag sind damit alle Probleme beseitigt. Da die Löcher beliebig ungleichmäßig über die Fläche des Vlieses verteilt sind, kann die höchste Festigkeit des Lochvlieses keine bevorzugte Richtung haben. Gleichzeitig können auch keine Interferrenzstreifen mehr über die Breite des Vlieses auftreten, denn die aus dem Düsenbalken austretenden Wasserstrahlen treffen die plastischen Erhöhungen jetzt immer an einer anderen Stelle. Damit hat das Bild des Lochvlieses zwar ungleichmäßig verteilte Löcher, diese sind aber über die Fläche des Vlieses ganz gleichmäßig deckend und beinhalten keinerlei gleichmäßige, immer wieder auftretende Änderungen, wie Streifen.Starting from a device according to EP-A-0 215 684, namely consisting of a smooth endless surface that supports and transports the fleece with drainage openings for the removal of the many by means of a nozzle bar Outlets with high pressure sprayed liquid and on the other hand with plastic elevations for the production of the smooth surface the perforation is provided in the fleece, the invention consists in that the elevations are distributed unevenly in both dimensions over the endless surface, they should be randomly spaced from each other (Application of a random generator) covering the whole of the fleece Area to be distributed. All problems are eliminated at once. Since the Holes can be distributed unevenly over the surface of the fleece highest strength of the perforated fleece have no preferred direction. At the same time there can also be no interference fringes across the width of the fleece, because the water jets emerging from the nozzle beam hit the plastic ones Increases now always in a different place. So that has the picture of the perforated fleece Although the holes are distributed unevenly, they are all over the surface of the fleece even coverage and do not contain any regular, recurring Changes, like stripes.

Im allgemeinen wird die glatte endlose Fläche die Form einer Trommel haben, es ist aber auch ein Endlosband für die Herstellung der Löcher denkbar. Wegen der vielen über die Fläche der Wandung verteilten, dicht beieinander angeordneten Drainageöffnungen, wegen der z. B. mit Laserstrahlen erfolgenden Herstellungsart der plastischen Erhöhungen und auch der Löcher in der Wandung dürfte die glatte Fläche im Querschnitt der Wandung nur eine gering dimensionierte Dicke haben. Es ist deshalb vorteilhaft, wenn ― zur auch notwendigen Absaugung der aufgespritzten Flüssigkeit - beidseitig der auf das Vlies und damit auf die das Vlies tragenden Fläche auftreffenden Wasserstrahlen auf der gegenüber liegenden Seite des Bandes oder innerhalb der Wandung der Trommel Gleitlängsschienen für die Abstützung des Bandes oder der Trommelwandung angeordnet sind. Zwischen den abstützenden Längsschienen ist dann der Saugzug der Pumpe wirksam.Generally the smooth endless surface will have the shape of a drum, it is but an endless belt for making the holes is also conceivable. Because of the many Drainage openings distributed close to each other over the surface of the wall, because of the z. B. with laser beams manufacturing type of plastic Elevations and also the holes in the wall should be the smooth surface in the Cross-section of the wall only have a small dimension. It is therefore advantageous if - for the necessary suction of the sprayed liquid - on both sides of the striking the fleece and thus on the surface supporting the fleece Jets of water on the opposite side of the belt or within the Wall of the longitudinal slide rails for supporting the belt or the Drum wall are arranged. Is between the supporting longitudinal rails then the suction of the pump takes effect.

Die plastischen Erhöhungen, wie Dorne, sollten je nach Anforderungen aus der Praxis eine Fläche von 20 bis 50 % im allgemeinen 30 % abdecken. Damit ist dann die offene Fläche des Vlieses entsprechend groß. Die Drainageöffnungen, die im allgemeinen aus geborten oder gebrannten Löchern bestehen, sollten einen Durchmesser von 0,5 bis 3 mm im allgemeinen 1, 5 mm aufweisen. Auf diese Weise ist ein schneller Abtransport der aufgespritzten Flüssigkeit möglich, ohne daß die Fasern des Vlieses in die Löcher eindringen und sich dort verhaken können.The plastic elevations, such as mandrels, should depend on practical requirements cover an area of 20 to 50%, generally 30%. This is the open one The area of the fleece is correspondingly large. The drainage openings, in general made of drilled or burned holes should have a diameter of 0.5 up to 3 mm generally 1.5 mm. This is a quick removal the sprayed liquid possible without the fibers of the fleece in can penetrate the holes and get caught there.

Der notwendige Durchmesser der Dorne und auch deren Abstand kann in Abhängigkeit der von der Industrie gewünschten offenen Fläche (Open Area) mittels der Gleichung OA = (D⊘ / DAbstand)2 x 0.9 berechnet werden. Dabei steht für OA die offene Fläche im Vlies aufgrund der Anzahl der Löcher oder der Lochdimension und -struktur im Vlies, D⊘ steht für den für die Lochstruktur wirksamen Durchmesser der plastischen Erhöhungen (Dorne) und DAbstand für den durchschnittlichen Abstand der Löcher im Vlies oder der Dorne auf dem Endlosband oder der Trommel. Rund um die Dorne sind dann die Drainageöffnungen in die Wandung eingebracht, womit die Drainageöffnungen zwar auch ungleichmäßig über die Fläche der Wandung verteilt sind, aber nicht nach dem Zufallsprinzip wie die Dorne, sondern in Abhängigkeit der Plazierung der Dorne.The required diameter of the mandrels and their spacing can be determined using the equation depending on the open area desired by the industry O A = (D ⊘ / D distance ) 2nd x 0.9 be calculated. O A is the open area in the fleece due to the number of holes or the hole dimension and structure in the fleece, D ⊘ stands for the diameter of the plastic elevations (mandrels) effective for the hole structure and D distance for the average distance of the holes in the Fleece or the thorns on the endless belt or the drum. The drainage openings are then introduced into the wall around the mandrels, whereby the drainage openings are also distributed unevenly over the surface of the wall, but not at random like the mandrels, but depending on the placement of the mandrels.

Im Falle der Verwendung eines Endlosbandes als Trägerelement der Dorne wird das gelochte Vlies unter einem Winkel in Abhängigkeit der Anordnung einer Abzugseinrichtung und im Falle der Verwendung einer Trommel als Trägerelement der Dorne wird das fertige Vlies aus der Rundung der Trommel tangential abgezogen, während die Dorne sich in derselben Umfangsrichtung weiterbewegen. Bei der Ablösung des Vlieses von der Herstellungsebene treten Kräfte an den Dornen auf, die die Löcher in ihrer Form verziehen. Um dies zu vermeiden, sieht die Erfindung in Ausgestaltung der Vorrichtung vor, daß die Flanken der plastischen Erhöhungen wie Dorne, zumindest in Transportrichtung des Vlieses gesehen die Außenflanke der jeweiligen plastischen Erhöhung, die Form einer Evolvente hat. Damit löst sich das gelochte Vlies von den Dornen wie bei miteinander kämmenden Zahnrädern problemlos.In the case of using an endless belt as a carrier element for the mandrels, this will be perforated fleece at an angle depending on the arrangement of a trigger device and in the case of using a drum as a carrier element of the mandrels the finished fleece is pulled off tangentially from the rounding of the drum, while the mandrels continue to move in the same circumferential direction. When the Nonwovens from the manufacturing level occur on the thorns that force the holes in distort their shape. In order to avoid this, the invention provides an embodiment of the Device before that the flanks of the plastic ridges like spikes, at least in Direction of transport of the fleece seen the outer flank of the respective plastic elevation, has the shape of an involute. The perforated fleece thus comes loose from the thorns as with meshing gears without any problems.

Eine Vorrichtung der erfindungsgemäßen Art ist in der Zeichnung beispielhaft dargestellt. Es zeigen:

Fig. 1
Im Querschnitt eine Walze zur Herstellung eines Lochvlieses,
Fig. 2
die Walze nach Fig. 1 mit darüber geführtem Vlies und der Walze zugeordnetem Düsenbalken,
Fig. 3
die Draufsicht auf die Wandung der Trommel nach Fig. 1 oder 2 mit einer Vielzahl von plastisch sich aus der Ebene der Trommelwandung hervorhebenden Dornen, die in einer ungleichmäßigen Verteilung keinem wiederkehrenden Muster entsprechen, und
Fig. 4
in vergrößerter Darstellung und im Querschnitt die Wandung der Trommel im Bereich eines Dornes.
A device of the type according to the invention is shown as an example in the drawing. Show it:
Fig. 1
In cross section a roller for producing a perforated fleece,
Fig. 2
1 with fleece guided over it and the nozzle bar assigned to the roller,
Fig. 3
the top view of the wall of the drum of Fig. 1 or 2 with a plurality of plastically emerging from the plane of the drum wall thorns, which do not correspond to a recurring pattern in an uneven distribution, and
Fig. 4
in an enlarged representation and in cross section the wall of the drum in the region of a mandrel.

Es geht um eine Wasservernadelungsvorrichtung wie sie beispielsweise in der DE-A-197 06 610 dargestellt ist. Dort dient die Vorrichtung zum Einführen eines noch unverfestigten Vlieses mittels eines tragenden Endlosbandes in den Spalt eines oberhalb dazulaufenden Endlosbandes und dann rund um eine Trommel, auf der das Vlies dann erstmals mit aus der Trommel zugeordneten Düsenbalken austretenden Wasserstrahlen vernadelt wird. Eine solche Vorrichtung ist zu verändern zur Herstellung von scharf abgegrenzten Löchern in ein bereits verfestigtes oder teilweise verfestigtes Vlies. In der Zeichnung ist dazu lediglich eine Trommel 1 dargestellt, der weitere Peripherieteile folgen und vorgeordnet sind, aber wegen der Übersichtlichkeit hier fortgelassen sind. Das im Grunde fertige und insofern nicht durch ein Endlosband getragene Vlies 2 überläuft unmittelbar die Trommel 1, der außerhalb ein oder mehrere Düsenbalken 3 gemäß Fig. 2 unmittelbar zugeordnet sind. Der Düsenbalken 3 ist achsparallel zur Trommel 1 angeordnet und an seiner der Trommel 1 zugeordneten Unterseite mit einem nicht dargestellten Düsenstreifen zum Austritt der Wasserstrahlen 4 versehen.It is about a water needling device such as that described in DE-A-197 06 610 is shown. There the device is used to insert a still unconsolidated Fleece by means of a supporting endless belt in the gap one above continuous belt and then around a drum on which the fleece then for the first time with water jets emerging from the nozzle bar assigned to the drum is needled. Such a device is to be modified to produce sharp delimited holes in an already consolidated or partially consolidated fleece. In the drawing shows only a drum 1, the other peripheral parts follow and are preceded, but are omitted here for the sake of clarity. The fleece 2, which is basically finished and therefore not carried by an endless belt immediately overflows the drum 1, which outside one or more nozzle bars 3rd 2 are assigned directly. The nozzle bar 3 is axially parallel to Drum 1 arranged and on its underside associated with drum 1 a nozzle strip, not shown, for the exit of the water jets 4.

Die Trommel 1 besteht gemäß Fig. 1 aus einer Trommelwandung 5, die dünn und bei Kunststoff instabil ausgebildet ist, bei der Herstellung aus Metall, wie Messing, kann die Trommelwandung 5 aber auch stabil und selbsttragend sein. Diese Trommelwandung 5 weißt gemäß Fig. 4 auf der Außenseite eine Vielzahl von plastischen Erhöhungen, wie Dorne 6 auf, die gemäß Fig. 3 in einer völlig ungleichmäßigen Verteilung über die Umfangsfläche der Trommel angeordnet sind. Die Dorne 6 sind umgeben von Drainageöffnungen 7. Die Anordnung der Dorne 6 wird mittels eines Zufallsgenerators bestimmt, so daß das Ergebnis eine nie wiederkehrende Anordnung bringt. Der Abstand der Dorne 6 zueinander ist stets verändert also ungleichmäßig, wie es auch in der Fig. 4 offenbart ist. Die Vielzahl der Dorne 6 können nach dieser Anordnung mittels computergesteuerter Laserstrahlen aus dem Vollen des Materials der Wandung herausgebrannt werden. Anschließend oder zur gleichen Zeit sind die Drainageöffnungen, wie Bohrungen 7 einzubringen, die die Dorne 6 rundum umgeben. Der jeweilige Abstand der Bohrungen 7 zu den Abgrenzungen der Dorne 6 ist ungleichmäßig, wie in Fig. 4 angedeutet, jedoch ist die Anordnung der Löcher 7 in der Wandung 5 abhängig von der Anordnung der Dorne 6 und insofern nur sekundär oder gar nicht von einem Zufallsgenerator bestimmt. Das Bild der Löcher 7 rund um die Dorne 6 kann öfter gleich sein, kann ein periodisch wiederkehrendes Bild offenbaren, wichtig ist nur die ungleichmäßige Anordnung der Dorne 6.1 consists of a drum wall 5, which is thin and at Plastic is unstable in the manufacture of metal, such as brass, can the drum wall 5 but also be stable and self-supporting. This drum wall 5 knows a multitude of plastic elevations according to FIG. 4, like mandrels 6 on, according to FIG. 3 in a completely uneven distribution the peripheral surface of the drum are arranged. The mandrels 6 are surrounded by drainage openings 7. The arrangement of the mandrels 6 is by means of a random generator determined so that the result brings a never recurring arrangement. The distance the mandrels 6 to each other is always changed unevenly, as it is in 4 is disclosed. The plurality of mandrels 6 can be arranged in this way using computer controlled laser beams from the full material of the wall be burned out. Then or at the same time, the drainage openings are how to drill holes 7 that surround the mandrels 6 all around. The respective The distance between the holes 7 and the boundaries of the mandrels 6 is uneven, 4, but the arrangement of the holes 7 in the wall 5 depending on the arrangement of the mandrels 6 and in this respect only secondary or not at all determined by a random number generator. The image of the holes 7 around the mandrels 6 can being the same more often can reveal a periodically recurring picture, the only important thing is the uneven arrangement of the mandrels 6.

Die Anzahl der Dorne 6 auf einer definierten Flächengröße und auch der wirksame Durchmesser der Dorne 6 ist abhängig von der von der Industrie gewünschten offenen Fläche des Lochvlieses. Diese offene Fläche ist bestimmt durch den Durchmesser der einzelnen Löcher und deren Anzahl/Flächeneinheit. Je nach vorgelegter Bestimmungsgröße kann der Rest an Größen berechnet werden unter Zuhilfenahme der Gleichung OA = (D⊘ / DAbstand)2 x 0,9, wobei OA für die offene Fläche im Vlies 2' aufgrund der Anzahl der Löcher oder der Lochdimension und -struktur im Vlies, und D⊘ für den für die Lochstruktur wirksamen Durchmesser der Dorne 6 und DAbstand für den durchschnittlichen Abstand der Löcher im Vlies oder der Dorne 6 auf der Trommel 1 steht. The number of mandrels 6 on a defined area size and also the effective diameter of the mandrels 6 depends on the open area of the perforated fleece desired by the industry. This open area is determined by the diameter of the individual holes and their number / unit area. The rest of the sizes can be calculated using the equation, depending on the determination parameter submitted O A = (D ⊘ / D distance ) 2nd x 0.9 , where O A for the open area in the fleece 2 'due to the number of holes or the hole dimension and structure in the fleece, and D ⊘ for the diameter of the mandrels effective for the hole structure 6 and D distance for the average spacing of the holes in the fleece or the mandrels 6 on the drum 1.

Im allgemeinen ist die offene Fläche auf 30 % gewünscht und die Löcher im Vlies mit einem Abstand von 3 ― 5 mm, jedenfalls kann damit die Anzahl der Dorne 6 pro Fläche bestimmt und damit der Zufallsgenerator bestückt werden. Die Drainageöffnungen zum Abtransport der aufgespritzten Flüssigkeit sind dann einzubringen, wobei deren Durchmesser zwischen 0, 5 und 1,5 mm liegen sollte, damit die Fasern des Vlieses sich nicht in den Löchern 7 verhaken können. Es ist aber auch möglich, die Lochstruktur im Vlies mit in den Abmessungen ungleichmäßigen Dornen 6 zu erzeugen, es können also auch dicke und dünne Löcher im Vlies durch entsprechend dimensionierte Dorne 6 hergestellt werden.In general, the open area is desired to 30% and the holes in the fleece with a distance of 3 - 5 mm, at least the number of mandrels 6 per surface determined and thus the random generator can be populated. The drainage openings to the Removal of the sprayed-on liquid must then be introduced, with their Diameter should be between 0, 5 and 1.5 mm so that the fibers of the fleece can not get caught in the holes 7. But it is also possible to use the hole structure to produce in the fleece with thorns 6 which are uneven in size, it can also make thick and thin holes in the fleece by appropriately dimensioned Mandrels 6 are manufactured.

Aus der Fig. 1 geht die Ausbildung der Dorne 6 wie auch aus der Fig. 4 hervor, sie erstrecken sich rund um die Trommel 1. Die Ausrichtung der Außenfläche ist nach außen hin konisch zusammenlaufend. Wie dargestellt ist die Querschnittsform jedoch nicht kegelförmig, also gleichmäßig spitz zulaufend, sondern die Kontur in der Querschnittslinie hat die Form einer Evolvente, die abhängig ist vom Durchmesser der Trommel 1. Im Ausführungsbeispiel sind die Dorne 6 rundum wie eine Evolvente gebogen, wichtig so auszubilden ist aber nur die in Transportrichtung vorne angeordnete Fläche der Dorne 6, weil hier die beim Ablösen des gelochten Vlieses 2' von der Trommel 1 entstehenden Dehnungserscheinungen besonders negativ für die gewünschte scharfe Abgrenzung der Löcher sein kann.From Fig. 1 the formation of the mandrels 6 as well as from Fig. 4 emerges, they extend around the drum 1. The orientation of the outer surface is outward converging conically. However, the cross-sectional shape is not as shown conical, i.e. tapering evenly, but the contour in the cross-sectional line has the shape of an involute, which is dependent on the diameter of the drum 1. In the exemplary embodiment, the mandrels 6 are bent all around like an involute, important but only the surface of the front arranged in the transport direction is to be designed in this way Mandrels 6, because here arise when the perforated fleece 2 'is detached from the drum 1 Signs of stretching particularly negative for the desired sharp Delimitation of the holes can be.

Die Trommelwandung 5 ist gemäß Fig. 1 auf einer stärker ausgebildeten Walze 8 über Gleitlängsschienen 9 rundum abgestützt. Die Walze 8 ist gleichzeitig das Saugrohr, innerhalb dessen also ein Saugzug erzeugt ist, um die aufgespritzte Flüssigkeit 4 aus dem Vlies 2 wieder abzusaugen. Aus diesem Grunde ist der Saugschlitz 10 radial außen beidseitig von solchen Gleitlängsschienen 9 begrenzt, die auch in Umfangsrichtung verschieblich auf der Walze 8 angebracht sein können. Die Gleitlängsschienen dienen hier nicht nur zum Abstützen der Trommelwandung 5, sondern auch zur Abdichtung zum Saugschlitz 10. Im Falle von mehreren der Trommel 1 zugeordneten Düsenbalken sind entsprechend auch mehrere Saugschlitze anzuordnen. Die Trommelwandung 5 kann aus Kunststoff, aus Stabilitätsgründen besser aber aus einem Metall hergestellt sein. Die Gleitlängsschienen 9 können ebenfalls aus beiden Materialien hergestellt sein, jedoch sollte die Paarung im Werkstoff unterschiedlich sein, so daß stets Metall auf Kunststoff gleitet.According to FIG. 1, the drum wall 5 is on a roller 8 of a more pronounced design Longitudinal sliding rails 9 supported all around. The roller 8 is also the suction tube, within which a suction draft is generated to spray the liquid 4 out vacuum the fleece 2 again. For this reason, the suction slot 10 is radial bounded on both sides by such longitudinal sliding rails 9, which also extend in the circumferential direction can be slidably mounted on the roller 8. The sliding longitudinal rails not only serve to support the drum wall 5, but also for sealing to the suction slot 10. In the case of several assigned to the drum 1 Nozzle bars are to be arranged accordingly several suction slots. The Drum wall 5 can be made of plastic, but better for reasons of stability be made of a metal. The sliding longitudinal rails 9 can also be made of both Materials are made, but the pairing should be different in the material be so that metal always slides on plastic.

Claims (22)

Vorrichtung zur Herstellung von perforierten Vliesstoffen (2') mittels hydrodynamischer Vernadelung, wobei die Perforation aus im wesentlichen schaff abgegrenzten Löchern im Vlies beliebiger Dimension gebildet ist, bestehend aus einer das Vlies (2) tragenden und transportierenden glatten Endlosfläche, die einerseits mit Drainageöffnungen (7) zum Abtransport der mittels eines Düsenbalkens (3) aus vielen Ausströmöffnungen mit Hochdruck aufgespritzten Flüssigkeit (4) und andererseits mit auf der Ebene der glatten Fläche empor stehenden plastischen Erhöhungen (6) zur Herstellung der Perforation im Vlies (2) versehen ist, dadurch gekennzeichnet, daß die Erhöhungen (6) in beiden Dimensionen ungleichmäßig über die Endlosfläche verteilt sind.Device for the production of perforated nonwovens (2 ') by means of hydrodynamic Needling, the perforation being essentially delineated Holes in the fleece of any dimension is formed, consisting of a the fleece (2) carrying and transporting smooth continuous surface, on the one hand with drainage openings (7) for removal by means of a nozzle bar (3) liquid sprayed with high pressure from many outflow openings (4) and on the other hand with plastic ones standing on the plane of the smooth surface Elevations (6) for producing the perforation in the fleece (2) is provided, characterized in that the ridges (6) are uneven in both dimensions are distributed over the endless surface. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Erhöhungen (6) jeweils mit ungleichmäßigem Abstand voneinander nach dem Zufallsprinzip (Anwendung eines Zufallsgenerators) deckend über die ganze das Vlies (2') tragenden Fläche verteilt sind.Device according to claim 1, characterized in that the elevations (6) randomly spaced from each other (application a random generator) covering the whole of the fleece (2 ') Area are distributed. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Fläche die Oberfläche eines endlos umlaufenden Bandes ist.Apparatus according to claim 1 or 2, characterized in that the surface of the Surface of an endless belt. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Fläche die Außenfläche einer Trommel (1) ist.Apparatus according to claim 1 or 2, characterized in that the surface of the Outside surface of a drum (1). Vorrichtung mit einem über die Arbeitsbreite des Vlieses (2) und damit einer Querlinie der Fläche sich erstreckenden Düsenbalken (3), aus dessen gleichmäßig über seine Länge verteilten Düsenlöchern die Flüssigkeit (4) gegen das Vlies (2) strömt, nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß beidseitig der auf das Vlies (2) und damit auf die das Vlies tragenden Fläche auftreffenden Wasserstrahlen (4) auf der gegenüberliegenden Seite des Bandes oder innerhalb der Wandung der Trommel (1) Gleitlängsschienen (9) für die Abstützung des Bandes oder der Trommelwandung (5) angeordnet sind.Device with one over the working width of the fleece (2) and thus one Transverse line of the surface extending nozzle bar (3), from the evenly over its length distributed nozzle holes the liquid (4) against the Fleece (2) flows according to one of the preceding claims, characterized in that that on both sides of the fleece (2) and thus on the non-woven Surface impinging water jets (4) on the opposite side of the belt or within the wall of the drum (1) sliding longitudinal rails (9) are arranged for supporting the belt or the drum wall (5). Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß zwischen zwei Gleitlängsschienen (9) der Saugschlitz (10) einer Walze (8) angeordnet und damit der Saugzug einer Pumpe auf das aufliegende Vlies (2) wirksam ist.Apparatus according to claim 5, characterized in that between two Longitudinal sliding rails (9) of the suction slot (10) of a roller (8) and thus arranged the suction of a pump on the overlying fleece (2) is effective. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß die Gleitlängsschienen (9) sich auf einer unter Saugzug stehenden, achsparallelen Saugwalze (8) abstützen.Device according to claim 6, characterized in that the longitudinal sliding rails (9) on an axially parallel suction roller under suction (8) support. Vorrichtung nach Anspruch 4 und 7, dadurch gekennzeichnet, daß auf der Saugwalze (8) rundum mehr als nur die beiden Längsschienen (9) neben dem Saugschlitz (10) zur vollen Abstützung der Trommelwandung (5) angeordnet sind.Device according to claims 4 and 7, characterized in that on the suction roll (8) all around more than just the two longitudinal rails (9) next to the suction slot (10) are arranged to fully support the drum wall (5). Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Endlosband oder die Trommel (1) aus Kunststoff gebildet ist.Device according to one of the preceding claims, characterized in that that the endless belt or drum (1) is made of plastic. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Endlosband oder die Trommel (1) aus einem metallischen Werkstoff gebildet ist.Device according to one of the preceding claims, characterized in that that the endless belt or drum (1) made of a metallic material is formed. Vorrichtung nach einem der Ansprüche 5 ― 8, dadurch gekennzeichnet, daß die Gleitlängsschienen (9) aus Kunststoff oder Metall je nach Ausbildung der die plastischen Erhöhungen (6) tragenden Wandung (5) ausgebildet ist.Device according to one of claims 5-8, characterized in that the Longitudinal rails (9) made of plastic or metal depending on the design of the plastic elevations (6) bearing wall (5) is formed. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die plastischen Erhöhungen (6) auf der Fläche insgesamt 20 - 50 %, vorzugsweise 30 %, abdecken.Device according to one of the preceding claims, characterized in that that the plastic elevations (6) on the surface a total of 20 - 50%, preferably 30%. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Drainagelöcher (7) zwischen den plastischen Erhöhungen (6) einen Durchmesser von 0,5 - 3 mm, vorzugsweise 1,5 mm, aufweisen. Device according to one of the preceding claims, characterized in that that the drainage holes (7) between the plastic ridges (6) one Have a diameter of 0.5-3 mm, preferably 1.5 mm. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Abstände zwischen den plastischen Erhöhungen (6) zwischen 1,5 und 20 mm, vorzugsweise 3 ― 10 mm, liegen.Device according to one of the preceding claims, characterized in that that the distances between the plastic elevations (6) between 1.5 and 20 mm, preferably 3 - 10 mm. Vorrichtung nach Anspruch 14, dadurch gekennzeichnet, daß die offene Fläche des Vlieses (2'), sprich der wirksame Durchmesser der plastischen Erhöhungen (6) zur Herstellung der Vlieslochstruktur, sich errechnet nach folgender Formel: OA = (D⊘ / DAbstand)2 x 0,9 wobei OA = (Open Area) steht für die offene Fläche im Vlies aufgrund der Anzahl der Löcher oder der Lochdimension und -struktur im Vlies, D⊘= steht für den für die Lochstruktur wirksamen Durchmesser der plastischen Erhöhungen und DAbstand = steht für den durchschnittlichen Abstand der Löcher im Vlies oder der Dorne auf der Fläche/Trommel. Device according to claim 14, characterized in that the open area of the fleece (2 '), that is the effective diameter of the plastic elevations (6) for producing the fleece hole structure, is calculated according to the following formula: O A = (D ⊘ / D distance ) 2nd x 0.9 in which O A = (Open Area) stands for the open area in the fleece due to the number of holes or the hole dimension and structure in the fleece, D ⊘ = stands for the diameter of the plastic elevations and for the hole structure D distance = stands for the average distance of the holes in the fleece or the spikes on the surface / drum. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die plastischen Erhöhungen (6) mit nach oben konisch abnehmendem, ggf. spitz auslaufendem Ende ausgebildet sind.Device according to one of the preceding claims, characterized in that that the plastic elevations (6) with conically decreasing upwards, if necessary pointed end are formed. Vorrichtung nach Anspruch 16, dadurch gekennzeichnet, daß die Flanken der plastischen Erhöhungen (6), zumindest in Transportrichtung des Vlieses (2) gesehen die Außenflanke der jeweiligen plastischen Erhöhung (6), die Form einer Evolvente hat.Apparatus according to claim 16, characterized in that the flanks of the plastic elevations (6), at least in the transport direction of the fleece (2) the outer flank of the respective plastic elevation (6), the shape of a Has involute. Vorrichtung nach Anspruch 4 und/oder 17, dadurch gekennzeichnet, daß die Form der Evolvente vom Durchmesser der Trommel (1) oder vom Winkel beim Abzug des gelochten Vlieses (2') von der Fläche abhängig ist.Apparatus according to claim 4 and / or 17, characterized in that the Shape of the involute from the diameter of the drum (1) or from the angle at Deduction of the perforated fleece (2 ') depends on the surface. Vorrichtung nach Anspruch 18, dadurch gekennzeichnet, daß die Höhe der plastischen Erhöhungen, wie Dorne (6), abhängig ist vom Trommeldurchmesser, vorzugsweise 1 ― 3 mm beträgt.Apparatus according to claim 18, characterized in that the height of the plastic elevations, such as mandrels (6), depend on the drum diameter, is preferably 1-3 mm. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die mit den plastischen Erhöhungen (6) und ggf. mit den Drainageöffnungen (7) versehene Oberfläche des Endlosbandes oder der Trommel (1) mittels eines Gravierlaserstrahls aus dem Vollen einer Materialschicht herausgearbeitet ist.Device according to one of the preceding claims, characterized in that that with the plastic elevations (6) and possibly with the drainage openings (7) provided surface of the endless belt or drum (1) worked out from the solid of a material layer by means of an engraving laser beam is. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Form, sprich die Querschnittsfläche und/oder der wirksame Durchmesser, der plastischen Erhöhungen (6) unterschiedlich ist.Device according to one of the preceding claims, characterized in that that the shape, i.e. the cross-sectional area and / or the effective diameter, the plastic elevations (6) is different. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß gegen die Endlosfläche oder die Trommel (1) zur Herstellung der Lochstruktur im Vlies (2') mehr als ein Düsenbalken (3) gerichtet ist.Device according to one of the preceding claims, characterized in that that against the endless surface or the drum (1) for producing the hole structure more than one nozzle bar (3) is directed in the fleece (2 ').
EP99122456A 1998-11-16 1999-11-11 Apparatus for making perforated nonwoven fabrics by means of hydrodynamic needling Expired - Lifetime EP1001064B1 (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001079598A2 (en) * 2000-04-17 2001-10-25 Firma Fleissner Gmbh & Co. Maschinenfabrik Suction device for use in a textile machine, especially a water jet weaving installation
US6849319B2 (en) 2001-12-03 2005-02-01 Tredegar Film Products Corporation Apertured nonwoven composites and method for making
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US7601415B2 (en) 2001-12-03 2009-10-13 Tredegar Film Products Corporation Absorbent device using an apertured nonwoven as an acquisition distribution layer
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Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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US6502288B2 (en) * 2000-02-11 2003-01-07 Polymer Group, Inc. Imaged nonwoven fabrics
SE516427C2 (en) * 2000-05-08 2002-01-15 Sca Hygiene Prod Ab Method and apparatus for producing nonwoven materials and using a net in the process
US6381817B1 (en) * 2001-03-23 2002-05-07 Polymer Group, Inc. Composite nonwoven fabric
FR2834725B1 (en) * 2002-01-15 2004-06-11 Rieter Perfojet MACHINE FOR PRODUCING A PATTERNED TEXTILE PRODUCT AND NON-WOVEN PRODUCT THUS OBTAINED
FR2838457B1 (en) * 2002-04-12 2004-08-27 Rieter Perfojet DRUM FOR INSTALLATION FOR PRODUCING A NON-WOVEN TABLECLOTH, METHOD FOR PRODUCING A NON-WOVEN TABLECLOTH, AND NON-WOVEN TABLECLOTH OBTAINED
DE10322052A1 (en) * 2003-05-15 2004-12-02 Fleissner Gmbh Water-permeable drum for the hydrodynamic needling of textile webs and method for producing the drum
DE102004030918A1 (en) * 2003-12-18 2005-07-21 Fleissner Gmbh Suction unit for a water needle jet system, to bond nonwoven fabrics and the like, has a sliding mechanism to close the suction openings at water beams not in use
FI121182B (en) * 2004-06-18 2010-08-13 Suominen Nonwovens Ltd Process for the manufacture of nonwovens
FR2877679B1 (en) * 2004-11-10 2007-04-27 Rieter Perfojet Sa DRUM NATURALLY FOR A MACHINE FOR ENCHEVETREMENT OF A NONTISSE BY JETS OF WATER.
US7485589B2 (en) 2005-08-02 2009-02-03 Pgi Polymer, Inc. Cationic fibrous sanitizing substrate
US20070056674A1 (en) * 2005-09-12 2007-03-15 Sellars Absorbent Materials, Inc. Method and device for making towel, tissue, and wipers on an air carding or air lay line utilizing hydrogen bonds
CN100453723C (en) * 2006-04-29 2009-01-21 杭州诺邦无纺股份有限公司 Stereo hydro-entangled master drum and non-woven rag
CN101406378B (en) * 2006-04-29 2010-09-08 杭州诺邦无纺股份有限公司 Tridimensional spunlace jacquard nonwoven cloth dishcloth
DE102006035914B3 (en) * 2006-07-31 2008-01-31 Fleissner Gmbh Pressure plate for the production of a water-permeable fleece web in paper manufacture has drain holes for effluent water
IL177788A (en) * 2006-08-30 2011-03-31 N R Spuntech Ind Ltd Cylindrical suction box assembly
DE102008029057A1 (en) 2008-06-18 2009-12-24 Fleissner Gmbh Method and device for producing a filament-containing nonwoven fabric
US9067357B2 (en) 2010-09-10 2015-06-30 The Procter & Gamble Company Method for deforming a web
US9220638B2 (en) 2010-09-10 2015-12-29 The Procter & Gamble Company Deformed web materials
US8657596B2 (en) 2011-04-26 2014-02-25 The Procter & Gamble Company Method and apparatus for deforming a web
CN102493125A (en) * 2011-11-21 2012-06-13 成都彩虹环保科技有限公司 Composite material processing equipment
JP2021532945A (en) 2018-08-22 2021-12-02 ザ プロクター アンド ギャンブル カンパニーThe Procter & Gamble Company Disposable absorbent goods
DE202018107163U1 (en) * 2018-12-14 2020-03-13 Autefa Solutions Germany Gmbh Jet suction box
CN114875581B (en) * 2022-06-14 2023-02-24 绍兴舒洁雅无纺材料有限公司 Non-woven fabrics water thorn system

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0511025A1 (en) * 1991-04-26 1992-10-28 Nippon Filcon Co., Ltd. Improvements in and relating to the manufacture of non-woven fabrics
WO1993015902A1 (en) * 1990-03-12 1993-08-19 Chicopee Novel apertured non-woven fabric
US5301401A (en) * 1985-02-11 1994-04-12 Uni-Charm Corporation Process and apparatus for producing nonwoven fabric
EP0705932A2 (en) * 1994-09-16 1996-04-10 McNEIL-PPC, INC. Nonwoven fabrics having raised portions
WO1996014457A2 (en) * 1994-11-02 1996-05-17 The Procter & Gamble Company Method of producing nonwoven fabrics
US5632072A (en) * 1988-04-14 1997-05-27 International Paper Company Method for hydropatterning napped fabric
WO1997022434A1 (en) * 1995-12-18 1997-06-26 Mcneil-Ppc, Inc. Laser drilling processes for making fabric and film forming devices
US5768756A (en) * 1995-05-17 1998-06-23 Icbt Perfojet Process and device for manufacturing a non-woven unpatterned textile

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1560701C3 (en) * 1961-03-02 1973-11-15 Johnson & Johnson, New Brunswick, N.J. (V.St.A.) Device for the production of a non-woven fiber material
US3617417A (en) * 1969-04-25 1971-11-02 Kendall & Co Process for forming a bonded nonwoven fabric
US3682756A (en) * 1970-03-24 1972-08-08 Johnson & Johnson Nonwoven fabric comprising rosebuds bounded by bundles
US3837046A (en) * 1970-03-24 1974-09-24 Johnson & Johnson Method (closed sandwich with large aperture forming means and perforated backing means)
ES2002406A6 (en) * 1985-09-20 1988-08-01 Uni Charm Corp Apparatus and process for producing apertured non-woven fabric.
US5238644A (en) * 1990-07-26 1993-08-24 Johnson & Johnson Inc. Low fluid pressure dual-sided fiber entanglement method, apparatus and resulting product
FR2731236B1 (en) * 1995-03-02 1997-04-11 Icbt Perfojet Sa INSTALLATION FOR THE PRODUCTION OF NONWOVEN TABLECLOTHS WHICH COHESION IS OBTAINED BY THE ACTION OF FLUID JETS
JP3487462B2 (en) * 1995-03-31 2004-01-19 王子製紙株式会社 Nonwoven fabric for vegetation sheet and method for producing the same

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5301401A (en) * 1985-02-11 1994-04-12 Uni-Charm Corporation Process and apparatus for producing nonwoven fabric
US5632072A (en) * 1988-04-14 1997-05-27 International Paper Company Method for hydropatterning napped fabric
WO1993015902A1 (en) * 1990-03-12 1993-08-19 Chicopee Novel apertured non-woven fabric
EP0511025A1 (en) * 1991-04-26 1992-10-28 Nippon Filcon Co., Ltd. Improvements in and relating to the manufacture of non-woven fabrics
EP0705932A2 (en) * 1994-09-16 1996-04-10 McNEIL-PPC, INC. Nonwoven fabrics having raised portions
WO1996014457A2 (en) * 1994-11-02 1996-05-17 The Procter & Gamble Company Method of producing nonwoven fabrics
US5768756A (en) * 1995-05-17 1998-06-23 Icbt Perfojet Process and device for manufacturing a non-woven unpatterned textile
WO1997022434A1 (en) * 1995-12-18 1997-06-26 Mcneil-Ppc, Inc. Laser drilling processes for making fabric and film forming devices

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001079598A2 (en) * 2000-04-17 2001-10-25 Firma Fleissner Gmbh & Co. Maschinenfabrik Suction device for use in a textile machine, especially a water jet weaving installation
WO2001079598A3 (en) * 2000-04-17 2002-03-21 Gerold Fleissner Suction device for use in a textile machine, especially a water jet weaving installation
US6849319B2 (en) 2001-12-03 2005-02-01 Tredegar Film Products Corporation Apertured nonwoven composites and method for making
US7601415B2 (en) 2001-12-03 2009-10-13 Tredegar Film Products Corporation Absorbent device using an apertured nonwoven as an acquisition distribution layer
EP1820892A1 (en) * 2006-02-17 2007-08-22 Fleissner GmbH Drum tray for creating structures and/or relief patterns on the surface of woven or non-woven cellulose or fibrous web
WO2008006522A1 (en) * 2006-07-14 2008-01-17 Fleissner Gmbh Apparatus for producing textiles, nonwoven substances, spunbonded fabrics, paper materials and/or perforated films
EP1884582A1 (en) * 2006-08-04 2008-02-06 Stork Prints Austria GmbH Sieves, in particular for consolidating nonwoven fabric by gas- or hydro-entanglement
CN103046228A (en) * 2013-01-15 2013-04-17 杭州诺邦无纺股份有限公司 Heart-shaped baby baby cleaning non-woven cloth
CN103046228B (en) * 2013-01-15 2015-10-21 杭州诺邦无纺股份有限公司 The clean skin nonwoven fabric of heart-shaped baby
CN103541154A (en) * 2013-10-30 2014-01-29 绍兴县庄洁无纺材料有限公司 Drum device allowing initiative transfer of wet fiber webs

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EP1001064B1 (en) 2004-11-24
EP1001064A3 (en) 2000-08-16
DE19852717A1 (en) 2000-05-18
DE59911131D1 (en) 2004-12-30
US6324738B1 (en) 2001-12-04
JP4410888B2 (en) 2010-02-03
JP2000154453A (en) 2000-06-06

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